defmodule Pleroma.Web.Federator do use GenServer alias Pleroma.User alias Pleroma.Web.WebFinger require Logger @websub Application.get_env(:pleroma, :websub) @max_jobs 10 def start_link do GenServer.start_link(__MODULE__, {:sets.new(), :queue.new()}, name: __MODULE__) end def handle(:publish, activity) do Logger.debug(fn -> "Running publish for #{activity.data["id"]}" end) with actor when not is_nil(actor) <- User.get_cached_by_ap_id(activity.data["actor"]) do Logger.debug(fn -> "Sending #{activity.data["id"]} out via websub" end) Pleroma.Web.Websub.publish(Pleroma.Web.OStatus.feed_path(actor), actor, activity) {:ok, actor} = WebFinger.ensure_keys_present(actor) Logger.debug(fn -> "Sending #{activity.data["id"]} out via salmon" end) Pleroma.Web.Salmon.publish(actor, activity) end end def handle(:verify_websub, websub) do Logger.debug(fn -> "Running websub verification for #{websub.id} (#{websub.topic}, #{websub.callback})" end) @websub.verify(websub) end def handle(type, payload) do Logger.debug(fn -> "Unknown task: #{type}" end) {:error, "Don't know what do do with this"} end def enqueue(type, payload) do if Mix.env == :test do handle(type, payload) else GenServer.cast(__MODULE__, {:enqueue, type, payload}) end end def maybe_start_job(running_jobs, queue) do if (:sets.size(running_jobs) < @max_jobs) && !:queue.is_empty(queue) do {{:value, {type, payload}}, queue} = :queue.out(queue) {:ok, pid} = Task.start(fn -> handle(type, payload) end) mref = Process.monitor(pid) {:sets.add_element(mref, running_jobs), queue} else {running_jobs, queue} end end def handle_cast({:enqueue, type, payload}, {running_jobs, queue}) do queue = :queue.in({type, payload}, queue) {running_jobs, queue} = maybe_start_job(running_jobs, queue) {:noreply, {running_jobs, queue}} end def handle_info({:DOWN, ref, :process, _pid, _reason}, {running_jobs, queue}) do running_jobs = :sets.del_element(ref, running_jobs) {running_jobs, queue} = maybe_start_job(running_jobs, queue) {:noreply, {running_jobs, queue}} end def handle_cast(m, state) do IO.inspect("Unknown: #{inspect(m)}, #{inspect(state)}") {:noreply, state} end end